Thursday, July 2, 2009

Observations on the Sound

Art Glowka and I started the first of many surveys yesterday. This was taken a mile south of Westcott cove in 80 feet of water. It was a slightly subsurface sample and the water temperature was 63 F out there. The sky was slightly overcast, so there was no direct sun.
He wanted me to look for the nutrients I can do, I got curious.
Samples were taken at 5, 7, 9 and 11 AM at the same location.
There was no reactive phosphate or nitrite-nitrogen.
The nitrate nitrogen varied between 0.525 mg/L to 0.629 mg/L.
The Secchi dish reading was between 4 and 5.
That is not a lot of nutrient and the nitrogen level is consistent with what everyone else has found.

Now for me.
the pH varied between 8.17 to 8.25
There were no indicator bacteria in any sample.
No total or fecal coliform and no enterococcus species.
There were a few non-coliform bacteria growing on the total coliform plate, they are not significant except that they a aerobic bacteria.
Turbidity varied between 1.32 to 1.64 NTUs.
The sample would be considered very clean.
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